因式分解-4x^2+9a^2+12xy-6a-9y^2+1

问题描述:

因式分解-4x^2+9a^2+12xy-6a-9y^2+1

-4x^2+9a^2+12xy-6a-9y^2+1
=-(4x²-12xy+9y²)+(9a²-6a+1)
=(3a-1)²-(2x-3y)²
=(3a-1+2x-3y)(3a-1-2x+3y)